Footwear sole



FIG. 1 is a perspective view of a footwear sole embodying our new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a front elevational view thereof; and,

FIG. 6 is a rear elevational view thereof.

FIGS. 1 and 3-6 show an upper in broken lines. The upper being shown for environmental purposes and form no part of the claimed design. 

The ornamental design for footwear sole, as shown and described. 